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H. Takahashi 《Mycoscience》2003,44(2):0103-0107
Three new species of Agaricales from eastern Honshu, Japan, are described and illustrated. (1) Clitocybe minutella sp. nov. (section Vernae), having white, very small, clitocyboid basidiomata with white, strigose mycelial tomentum at the base of the stipe and trichodermial
elements in the pileipellis, occurs on leaf litter in deciduous oak forests. (2) Crepidotus longicomatus sp.nov. (section Echinospori), forms very small (up to 3.5 mm in diameter), reniform basidiomata densely covered overall with white to pale yellow, erect,
thick-walled, long hairs. It has melleous, echinulate basidiospores, and was found on fallen dead branches in lowland oak
forests. (3) Crepidotus virgineus sp. nov. (section Crepidotus), forming pure white, reniform basidiomata, has smooth, ellipsoid basidiospores, subfusiform-pedicellate to irregularly cylindrical
cheilocystidia, and abundant clamp connections. It occurs on fallen dead branches in lowland oak forests.
Received: August 22, 2002 / Accepted: January 8, 2003
Acknowledgments I am grateful to Dr. Yousuke Degawa (KPM) for allowing the specimens cited to be kept in the Kanagawa Prefectural Museum
of Natural History.
Correspondence to:H. Takahashi 相似文献
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Abstract The egg masses of the marine muricid gastropod molluscs Chicoreus virgineus, Chicoreus ramosus and Rapana rapiformis were studied for antifouling activities. The minimum inhibitory concentrations of crude extracts for the inhibition of byssal production and attachment of the brown mussel Perna indica were 650 μg ml?1, 1150 μg ml?1 and 925 μg ml?1 from the three muricid gastropods, respectively. Higher LC50 values than EC50 values and 100% recovery of the mussels in the toxicity assay indicated the non-toxic nature of the extracts. The gradient partitioning of the egg mass extracts and subsequent antimicrofouling screening against 40 biofilm bacteria showed wide-spectrum antibacterial activity of the medium polar fraction from C. virgineus; the non-polar fraction from R. rapiformis and both non-polar and medium polar fractions from C. ramosus. The antimicrofouling activity from extracts of the three egg masses was found to be more prominent than antimacrofouling activity. This may be attributed to the targeting of a defence strategy against microbes in order to protect the developing mollusc embryos. 相似文献
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